Switch to the current iOS 4.2 SDK.
diff --git a/build-ios.sh b/build-ios.sh
index 751fc69..1035843 100755
--- a/build-ios.sh
+++ b/build-ios.sh
@@ -2,7 +2,7 @@
PLATFORM_IOS=/Developer/Platforms/iPhoneOS.platform/
PLATFORM_IOS_SIM=/Developer/Platforms/iPhoneSimulator.platform/
-SDK_IOS_VERSION="4.1"
+SDK_IOS_VERSION="4.2"
MIN_IOS_VERSION="3.0"
mkdir -p "build-ios"